Biomedical Optical Sensors
摘要
In this chapter, we introduce the advantages of optical sensing technology and describe the typical biomedical optical sensor, photoplethysmography (PPG) device. Optical sensors have become an important tool in the field of modern medicine by virtue of their non-invasive, sensitive, real-time, and portable characteristics, and greatly promote the realization of remote physiological monitoring and telemedicine. In particular, we describe the integration of PPG technology in wearable devices, including principles, limitations, and future trends. Promising remote PPG technologies and their emerging applications are also introduced. Optical sensing technology is booming, and the accompanying challenges such as privacy and accuracy issues have attracted widespread attention.